CN117719704A - Thermal control system for floating disconnect active end - Google Patents
Thermal control system for floating disconnect active end Download PDFInfo
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- CN117719704A CN117719704A CN202311777769.XA CN202311777769A CN117719704A CN 117719704 A CN117719704 A CN 117719704A CN 202311777769 A CN202311777769 A CN 202311777769A CN 117719704 A CN117719704 A CN 117719704A
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- 239000003063 flame retardant Substances 0.000 claims description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 11
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- Pipe Accessories (AREA)
Abstract
The invention provides a thermal control system for a driving end of a floating disconnect, which comprises an active thermal control system and a passive thermal control system. The active thermal control system comprises a heating assembly for respectively heating the support at the active end of the floating connector, the motor, the guide pipe and the cable support, and a temperature sensor assembly for respectively collecting the temperatures of the support at the active end of the floating connector, the motor and the guide pipe; the passive thermal control system includes a thermal insulation pad disposed between the floating disconnect active end devices, a multi-layer thermal insulation assembly disposed on an outer surface of the floating disconnect active end devices, and a surface state assembly. Through the heating support, improve basic temperature, be equivalent to improving installation boundary temperature through the heating support, increase the heat insulating mattress between cable big support and cable little support, and the heat insulating mattress divides the three-layer to overlap to form, and the centre is drawn to be empty in order to reduce area of contact, under the same heating power, is favorable to saving heating power, guarantees the inside temperature homogeneity of whole floating disconnect module.
Description
Technical Field
The invention relates to the field of spacecraft structural design, in particular to a thermal control system for a driving end of a floating disconnect.
Background
Since the nineties of the last century, the transmission of long-term on-orbit manned off-ground space stations has been the target of pursuing in the aerospace field in the large countries of the world today. Developing and launching a manned off-ground space station is not equivalent to the long term on-orbit space that it can operate. If this object is to be achieved, it is first necessary to address the basic condition that the space propulsion system is able to continue to operate—the replenishment of propellant and pressurized gas. The propellant is a large amount of toxic, inflammable and explosive liquid at present, and the pressurized gas is a high-pressure and easily-leaked gas, so that whether the on-track supplement can be safely and reliably carried out becomes one of key technologies developed in space stations of various countries.
The floating disconnect is also known as an on-track make-up connection, and is one of the key technologies for on-track make-up. The device has the main function of realizing connection and disconnection of a liquid path and a gas path according to certain requirements along with the butt joint and separation of two aircrafts, thereby realizing the transmission of fuel, oxidant and gas between the two aircrafts.
In view of the functionality of the floating disconnector, it is necessary to ensure that the transported substances, in particular the oxidizing agent, are not below freezing point by certain thermal control measures. Unlike the better environment conditions in the spacecraft cabin, the floating disconnect is usually installed at the head or tail of the spacecraft and exposed to the space, and is influenced by the space heat sinking and cooling environment and subjected to external heat flow such as solar irradiation.
For a spacecraft with long service life and extremely tight power consumption resources such as an sky telescope, the conventional design cannot meet the temperature and temperature uniformity requirements of the floating disconnect at the temperature boundary of the active end as low as-40 ℃. Therefore, a new thermal control system for the active end of the floating disconnect has to be designed.
Disclosure of Invention
In view of the shortcomings in the prior art, it is an object of the present invention to provide a thermal control system for a floating disconnect active end.
The invention provides a thermal control system for a driving end of a floating disconnect, which comprises an active thermal control system and a passive thermal control system; the active thermal control system comprises a heating assembly for respectively heating the support of the active end of the floating connector, the motor, the guide pipe and the cable support, and a temperature sensor assembly for respectively collecting the temperatures of the support of the active end of the floating connector, the motor and the guide pipe; the passive thermal control system includes a thermal insulation pad disposed between the floating disconnect active end devices, a multi-layer thermal insulation assembly disposed on an outer surface of the floating disconnect active end devices, and a surface state assembly.
Preferably, the heating component comprises a film heater, wherein one or more pieces of film heater are respectively attached to a floating disconnect drive end bracket, a motor, a conduit and a cable bracket; and heating power values of the floating disconnect device driving end support, the motor, the guide pipe and the cable support are calculated through simulation and verified through thermal balance experiment examination.
Preferably, the temperature sensor assembly comprises a plurality of temperature sensors, and the pasting positions of the temperature sensors respectively cover the lowest temperature positions of the floating disconnect drive end bracket, the motor and the guide pipe.
Preferably, the temperature sensor assembly is connected to a control system; during the supplementing period, the temperature control threshold value of the temperature control loop of the active end of the floating disconnect is set at 0-10 ℃; during storage, the temperature control threshold of the floating disconnect active side temperature control loop is set at-10 ℃ to-5 ℃.
Preferably, the heat insulation pad comprises a phenolic laminated cloth plate, the phenolic laminated cloth plate is formed by overlapping a plurality of phenolic laminated cloth plates, and a cylinder is hollowed in the middle of the heat insulation pad.
Preferably, the multi-layer heat insulation assembly comprises a conduit multi-layer heat insulation assembly, a floating disconnect active end multi-layer heat insulation assembly and a cable mounting bracket multi-layer heat insulation assembly; any one of the multi-layer heat insulation components consists of a plurality of unit multi-layer heat insulation materials, and any one unit multi-layer heat insulation material consists of a layer of double-sided aluminized polyester film and a layer of polyester yarn screen cloth.
Preferably, the multi-layer heat insulation component of the driving end of the floating connector is overlapped with the multi-layer outside the butt joint structure through a nylon wire buckle; the multi-layer heat insulation assembly of the cable mounting bracket is lapped by the nylon wire hasp.
Preferably, the conduit is a corrugated hose, and the conduit is in the form of a monolithic multilayer integral wrap.
Preferably, the form of integral multi-layer integral cladding of the conduit comprises uniformly coating a layer of GD414 glue on the insulating bottom film and winding a heating belt after solidification, winding a layer of insulating bottom film outside the heating belt, winding a layer of double-sided aluminized polyimide film, integrally cladding the conduit into multiple layers, and sewing and fixing the lap joint by flame retardant wires.
Preferably, the surface state component is a layer of flame retardant cloth for preventing atomic oxygen outside arranged on the outer side of the multi-layer heat insulation component and a layer of conductive single-sided aluminized polyimide film secondary surface mirror single-sided pressure sensitive adhesive tape at the butt joint surface.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the base temperature is increased by the heating support, which is equivalent to increasing the installation boundary temperature by the heating support, the heat insulation pad is added between the large cable support and the small cable support, the heat insulation pad is formed in a non-integrated manner and is formed by overlapping three layers, and the middle is hollowed out to reduce the contact area, so that the heating power is saved under the same heating power, and the temperature uniformity inside the whole floating connector module is ensured.
2. According to the invention, through the anti-atomic oxygen external flame-retardant cloth with the multi-layer outer surface and the conductive single-sided aluminized polyimide film secondary surface mirror single-sided pressure-sensitive adhesive tape at the butt joint surface, the floating connector and the thermal control thereof can be protected from being degraded by space atomic oxygen, and the temperature exceeding the upper limit during the direct irradiation of the sun can be avoided.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a thermal control system embodying the present invention;
FIG. 2 is a schematic view of the overall structure of a heat insulation mat according to the present invention;
FIG. 3 is a multi-layer exterior view of the active end of a floating disconnect embodying the present invention;
fig. 4 is a multi-layer profile view of a cable holder embodying the invention primarily for a floating disconnect drive end.
The figure shows: 1. a floating disconnect drive end bracket; 2. a motor; 3. a conduit; 4. a cable large bracket; 5. a small cable bracket; 6. a heat insulating mat; 7. a nylon wire hasp.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
As shown in fig. 1 and 2, a thermal control system for a floating disconnect active end according to the present invention includes an active thermal control system and a passive thermal control system. The active thermal control system comprises a heating component for respectively heating the floating connector driving end support 1, the motor 2, the guide pipe 3 and the cable support, and also comprises a temperature sensor component for respectively collecting the temperatures of the floating connector driving end support 1, the motor 2 and the guide pipe 3. The passive thermal control system includes a thermal insulation pad 6 disposed between the floating disconnect active end devices, a multi-layer thermal insulation assembly disposed on the outer surface of the floating disconnect active end devices, and a surface state assembly.
The invention not only can solve the problems that the temperature of the driving end of the floating connector is not lower than 0 ℃ and the temperature difference of the driving end of the whole floating connector is not more than 20 ℃ under the condition that the mounting temperature of the brackets at two ends is as low as-40 ℃, but also can ensure that the temperature of the driving end of the floating connector is not higher than the upper limit during the direct sunlight. The heat resistance between the floating connector and the bulkhead is increased by heating the brackets at the two ends of the floating connector and increasing the heat insulation pad 6 between the large cable bracket 4 and the small cable bracket 5, so that the temperature environment of the driving end of the floating connector is improved, and the temperature uniformity of the whole floating connector can be ensured under the condition of low temperature installation boundary.
Specifically, the heating assembly comprises a film heater, and one or more pieces of film heater are respectively stuck on the floating disconnect drive end bracket 1, the motor 2, the conduit 3 and the cable bracket. The heating power values of the floating disconnect drive end bracket 1, the motor 2, the guide pipe 3 and the cable bracket are calculated through simulation, and are verified through a heat balance test of the telescope among the sky. The present application proposes a possible implementation: the heating power design value of the floating disconnect drive end bracket 1 is 4.5W, the heating power design value of the motor 2 is 3.6W, the heating power design value of the conduit 3 is 1.8W, and the heating power design value of the cable small bracket 5 is 1.5W.
The 4.5W of the floating disconnect drive end bracket 1 is realized by two heating plates, wherein one heating plate corresponds to 2W, and the other heating plate corresponds to 2.5W. The heating power of the motor 2 is 3.6W, and the upper heating plate is adhered to the outer side surface of the cylinder. According to the case where the duct 3 can be wound with heating tapes, 1.8W on the duct 3 is realized by 4 heating tapes, each heating tape having a heating power of 0.45W. The heating power corresponding to the heating sheet of the small cable bracket 5 is 1.5W. All 8 heating plates (belts) on the whole module are connected in series, and are connected into a 29V power supply circuit, the total design power of the circuit is 11.4W, and the nominal resistance value of the circuit is 73.8Ω.
More specifically, the temperature sensor assembly includes a plurality of temperature sensors, and the adhesion positions of the temperature sensors cover the lowest temperature positions of the floating disconnect drive end bracket 1, the motor 2 and the conduit 3, respectively. Through analysis, the three measuring points cover the position with the worst temperature, and the temperature of the motor 2 is also monitored, so that the propellant is not frozen, and the normal working temperature of the floating disconnect can be ensured. The temperature sensor assembly is connected with the control system; during the replenishment, the temperature control threshold of the temperature control loop of the active end of the floating disconnect is set at 0 ℃ to 10 ℃. During storage, the temperature control threshold of the floating disconnect active side temperature control loop is set at-10 ℃ to-5 ℃. The temperature sensor may be a thermistor, both MF61.
More specifically, the heat insulation pad 6 comprises a phenolic laminated cloth plate, the phenolic laminated cloth plate is formed by overlapping a plurality of phenolic laminated cloth plates, and a cylinder is hollowed in the middle of the heat insulation pad 6. Further, the heat insulation pad 6 is a phenolic laminated cloth plate between the cable installation support and the small support. The heat insulation pad 6 is a phenolic laminated cloth plate with the thickness of 3mm, and is formed by overlapping three phenolic laminated cloth plates with the thickness of 1 mm. In addition, a cylinder is hollowed out in the middle of the heat insulation pad 6, so that the contact area is reduced, the thermal resistance between the guide pipe 3 and the support is increased, and the heating power on the guide pipe 3 is prevented from being transferred to the cable large support 4 through the support. The large cable bracket 4 and the small cable bracket 5 are both made of aluminum alloy, the heat conductivity coefficient is as high as 120W/(m.K), and the heat insulation pad 6 is arranged between the large cable bracket 4 and the small cable bracket 5, so that the heat conduction and heat leakage of heating power on the conduit 3 through the small cable bracket 5 can be reduced.
The multi-layer heat insulation assembly comprises a conduit 3 multi-layer heat insulation assembly, a floating disconnect active end multi-layer heat insulation assembly and a cable installation bracket multi-layer heat insulation assembly. Any one of the multi-layer heat insulation components consists of a plurality of unit multi-layer heat insulation materials, and any one of the unit multi-layer heat insulation materials consists of a layer of double-sided aluminized polyester film and a layer of polyester yarn screen. The technical scheme of the application provides a feasible implementation mode which is as follows: each part of the multi-layer heat insulation consists of twenty units of multi-layer heat insulation material components, and each unit consists of a layer of double-sided aluminized polyester film and a layer of polyester silk screen cloth.
As shown in fig. 3 and 4, the multi-layer insulation assembly of the floating disconnect active end is overlapped with the multi-layer outside the butt joint structure through a nylon wire buckle 7. The multi-layer heat insulation assembly of the cable mounting bracket is lapped by the nylon wire hasp 7. The conduit 3 is a corrugated hose, and the conduit 3 is in a form of a whole multi-layer integral cladding. The form of the whole multi-layer integral cladding of the conduit 3 comprises that a layer of GD414 glue is uniformly coated on the insulating bottom film and is wound on the hose, after solidification, a heating belt is wound, a layer of insulating bottom film is firstly wound outside the heating belt, a layer of double-sided aluminized polyimide film is then wound, and finally, the conduit 3 is integrally clad in multiple layers, and the lap joint is sewn and fixed by flame retardant wires.
The surface state component is a layer of anti-atomic oxygen external flame-retardant cloth arranged on the outer side of the multi-layer heat insulation component and a layer of conductive single-sided aluminized polyimide film secondary surface mirror single-sided pressure-sensitive adhesive tape at the butt joint surface. Further, the outer side of the multi-layer heat insulation component is provided with an anti-atomic oxygen external flame retardant cloth with high anti-space atomic oxygen capability and a layer of conductive single-sided aluminized polyimide film secondary surface mirror single-sided pressure sensitive adhesive tape at the butt joint surface, and the two heat control materials have the surface characteristics of static resistance and low absorption and emission ratio. The anti-atomic oxygen external flame-retardant cloth is adopted as a multilayer surface state, and a layer of conductive single-sided aluminized polyimide film secondary surface mirror is adhered to the butt joint surface, so that the anti-space atomic oxygen degradation is avoided, and meanwhile, the influence of the temperature exceeding the upper limit during the period of directly illuminating the floating connector on the function of the floating connector is avoided.
Under the condition that the mounting temperature of the bracket is as low as-40 ℃, the basic temperature is increased by heating the bracket, which is equivalent to increasing the mounting boundary temperature by heating the bracket. The heat insulation pad 6 is added between the large cable support 4 and the small cable support 5, the heat insulation pad 6 is formed in a non-integral mode and is formed by overlapping three layers, the middle of the heat insulation pad is hollowed out to reduce the contact area, and under the same heating power, the heat insulation pad is beneficial to saving the heating power and guaranteeing the temperature uniformity inside the whole floating connector module. The anti-atomic oxygen external flame-retardant cloth with the multi-layer outer surface and the conductive single-sided aluminized polyimide film secondary surface mirror single-sided pressure-sensitive adhesive tape at the butt joint surface can protect the floating connector and the thermal control thereof from being degraded by space atomic oxygen and can also avoid the temperature exceeding the upper limit during the direct irradiation of the sun.
For the aircraft with the low installation temperature of the floating disconnector, the traditional design ideas of only heating the floating disconnector, not considering the influence of high temperature, and unifying the temperature control threshold value in the whole task stage are not only wasteful of power, but also have large temperature difference and high temperature risk, and bring adverse influence to the performance of the floating disconnector. The invention is equivalent to improving the basic environment temperature of the driving end of the floating disconnect device by heating the brackets at the two ends; by adding the heat insulation pad 6 sheets among the brackets and the heat insulation pad 6 sheets are not integrally formed, but three layers are overlapped and hollowed in the middle, the heat resistance between the guide pipes 3 and the guide pipes is increased, the heat leakage of the guide pipes 3 is reduced, and the temperature uniformity of the guide pipes 3 are ensured. And secondly, the anti-atomic oxygen external flame-retardant cloth adopted by the multi-layer outer surface and a layer of conductive single-sided aluminized polyimide film secondary surface mirror single-sided at the butt joint surface are beneficial to ensuring that the temperature of the floating connector does not exceed the upper limit during the direct irradiation of the active end of the floating connector to the sun. And thirdly, adjusting the temperature control threshold value of the floating disconnector according to the task profile, so that the normal working temperature of the floating disconnector in the supplementing period is ensured, and power is not wasted.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. A thermal control system for a floating disconnect active end, comprising an active thermal control system and a passive thermal control system;
the active thermal control system comprises a heating assembly for respectively heating the floating connector driving end support (1), the motor (2), the guide pipe (3) and the cable support, and also comprises a temperature sensor assembly for respectively collecting the temperatures of the floating connector driving end support (1), the motor (2) and the guide pipe (3);
the passive thermal control system includes a thermal insulation pad (6) disposed between the floating disconnect active end devices, a multi-layer thermal insulation assembly disposed on an outer surface of the floating disconnect active end devices, and a surface state assembly.
2. The thermal control system for the floating disconnect drive end of claim 1, wherein the heating assembly comprises a thin film heater having one or more pieces of film heater affixed to the floating disconnect drive end bracket (1), motor (2), conduit (3), and cable bracket, respectively;
the heating power values of the floating disconnect device driving end support (1), the motor (2), the guide pipe (3) and the cable support are calculated through simulation, and are verified through thermal balance experiment examination.
3. A thermal control system for a floating disconnect drive end according to claim 1, characterized in that the temperature sensor assembly comprises a plurality of temperature sensors, the attachment locations of which cover the lowest temperature of the floating disconnect drive end bracket (1), motor (2) and conduit (3), respectively.
4. The thermal control system for a floating disconnect drive end of claim 1, wherein said temperature sensor assembly is connected to a control system;
during the supplementing period, the temperature control threshold value of the temperature control loop of the active end of the floating disconnect is set at 0-10 ℃;
during storage, the temperature control threshold of the floating disconnect active side temperature control loop is set at-10 ℃ to-5 ℃.
5. A thermal control system for a floating disconnect drive end as defined in claim 1 wherein said insulation blanket (6) comprises phenolic laminated panels comprising a plurality of overlapping phenolic laminated panels with a cylinder hollowed out of the insulation blanket (6).
6. The thermal control system for a floating disconnect drive end of claim 1, wherein the multi-layer insulation assembly comprises a conduit (3) multi-layer insulation assembly, a floating disconnect drive end multi-layer insulation assembly, and a cable mounting bracket multi-layer insulation assembly;
any one of the multi-layer heat insulation components consists of a plurality of unit multi-layer heat insulation materials, and any one unit multi-layer heat insulation material consists of a layer of double-sided aluminized polyester film and a layer of polyester yarn screen cloth.
7. The thermal control system for a floating disconnect drive end of claim 6, wherein the multi-layer insulation assembly of the floating disconnect drive end is overlapped with multiple layers outside the docking structure by a nylon wire buckle (7);
the multi-layer heat insulation assembly of the cable mounting bracket is overlapped by the nylon wire buckle (7).
8. A thermal control system for a floating disconnect drive end according to claim 1, wherein said conduit (3) is a corrugated hose, the conduit (3) being in the form of a monolithic multilayer integral wrap.
9. The thermal control system for the active end of the floating disconnect as defined in claim 8, wherein the integral multilayer integral coating of the conduit (3) comprises uniformly coating a GD414 glue layer on the insulating base film and winding the insulating base film on the hose, winding a heating belt after curing, winding a layer of insulating base film outside the heating belt, winding a layer of double-sided aluminized polyimide film, finally integrally coating the conduit (3) with a plurality of layers, and sewing and fixing the lap joint by flame-retardant wires.
10. The thermal control system for the active end of a floating disconnect of claim 1, wherein the surface state assembly is a layer of atomic oxygen resistant, externally applied flame retardant cloth disposed outside the multi-layer insulation assembly and a layer of conductive, single sided aluminized polyimide film, secondary surface mirror, single sided pressure sensitive adhesive tape at the interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311777769.XA CN117719704A (en) | 2023-12-21 | 2023-12-21 | Thermal control system for floating disconnect active end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311777769.XA CN117719704A (en) | 2023-12-21 | 2023-12-21 | Thermal control system for floating disconnect active end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117719704A true CN117719704A (en) | 2024-03-19 |
Family
ID=90199652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311777769.XA Pending CN117719704A (en) | 2023-12-21 | 2023-12-21 | Thermal control system for floating disconnect active end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117719704A (en) |
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2023
- 2023-12-21 CN CN202311777769.XA patent/CN117719704A/en active Pending
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